Malicious PDF — malware analysis report

Static analysis result for SHA-256 8fdcdb1430ba6436…

MALICIOUS

PDF

42.5 KB Created: 2020-08-03 10:28:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5b911cf91b4278e3b15f0567685f406b SHA-1: c8753d79d4127f7770c1e15878f18c518a0e823d SHA-256: 8fdcdb1430ba6436a02a364370583b7bea15f3f4678d32568a26885a19b01c5f
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.ru'. Additionally, it exhibits a PDF link farm heuristic, embedding numerous external PDF links, with the first identified link being to 'cdn.shopify.com'. The document body contains the URL 'https://ttraff.ru/pify?keyword=wp+recipe+maker', suggesting a lure to a malicious site. No scripts were extracted from this sample.

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.ru/pify?keyword=wp+recipe+maker
    • http://files.petergraneis.com/uploads/1/3/1/4/131437376/1140265.pdf
    • http://files.kristieberger.com/uploads/1/3/2/6/132681479/mumakogiverabebojura.pdf
    • http://files.banningchiropractic.com/uploads/1/3/1/4/131438098/solazidexog.pdf
    • https://cdn.shopify.com/s/files/1/0427/4746/1788/files/dummit_and_foote_solution.pdf
    • https://cdn.shopify.com/s/files/1/0429/0940/1254/files/kojupibipulowa.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/1402562920.pdf
    • https://cdn.shopify.com/s/files/1/0432/8095/7598/files/fibomowirogawabasorenaruj.pdf
    • https://cdn.shopify.com/s/files/1/0429/0471/5427/files/favabalerivamexof.pdf
    • https://cdn.shopify.com/s/files/1/0436/6244/2646/files/8207412043.pdf
    • https://cdn.shopify.com/s/files/1/0439/1187/2667/files/zerelugetoraxoponegimop.pdf
    • https://cdn.shopify.com/s/files/1/0437/1267/5995/files/48917530008.pdf
    • https://cdn.shopify.com/s/files/1/0439/9906/8318/files/gowedabe.pdf
    • https://cdn.shopify.com/s/files/1/0433/6300/8661/files/nadifizukelazejurazorir.pdf
    • https://cdn.shopify.com/s/files/1/0430/8867/4967/files/gofaxopini.pdf
    • https://cdn.shopify.com/s/files/1/0430/9454/0452/files/kuxamenog.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006a4a.bin
8f72234ab717a115360144faca0a8298e8c9a569c085699e4344f11b846a3d88		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A4A 4948 bytes
font_01_sfnt_off00007b18.bin
e6206b7ee6eb1a6a815f29f99a9dd38a7e184cb8b1667eb800f41b857190a4f2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B18 9880 bytes

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